// 引入axios和Element Plus组件
import axios from 'axios';
import { Notification, MessageBox, Message, Loading } from 'element-ui'
import { encryptBase64, encryptWithAes, generateAesKey, decryptWithAes, decryptBase64 } from '@/utils/crypto';
import { encrypt, decrypt } from '@/utils/jsencrypt';
import { getToken } from '@/utils/auth';
import { HttpStatus } from '@/enums/RespEnum';
import { tansParams, blobValidate } from "@/utils/ruoyi";
import { errorCode } from '@/utils/errorCode';
import cache from '@/plugins/cache'
import store from '@/store'
axios.defaults.headers['Content-Type'] = 'application/json;charset=utf-8';
axios.defaults.headers['clientid'] = process.env.VUE_APP_CLIENT_ID;



let downloadLoadingInstance;
const encryptHeader = 'encrypt-key';
// 是否显示重新登录
export let isRelogin = { show: false };
// 导出 axios 实例
const service = axios.create({
  baseURL: process.env.VUE_APP_BASE_API,
  timeout: 50000
});
// 请求拦截器
service.interceptors.request.use(
  config => {
    config.headers['Content-Language'] = 'zh-CN'; // 示例中未提及具体的国际化设置，这里暂时写死了一个值

    // console.log(config)
    const isToken = config.headers?.isToken === false;
    const isRepeatSubmit = config.headers?.repeatSubmit === false;
    const isEncrypt = config.headers.isEncrypt == true;

    if (getToken() && !isToken) {
      config.headers['Authorization'] = 'Bearer ' + getToken();
      config.headers['clientid'] = process.env.VUE_APP_CLIENT_ID
    }

    if (config.method === 'get' && config.params) {
      let url = config.url + '?' + tansParams(config.params);
      url = url.slice(0, -1);
      config.params = {};
      config.url = url;
    }

    if (!isRepeatSubmit && (config.method === 'post' || config.method === 'put')) {
      const requestObj = {
        url: config.url,
        data: typeof config.data === 'object' ? JSON.stringify(config.data) : config.data,
        time: new Date().getTime()
      };
      const sessionObj = cache.session.getJSON('sessionObj');
      if (!sessionObj) {
        cache.session.setJSON('sessionObj', requestObj);
      } else {
        const s_url = sessionObj.url;
        const s_data = sessionObj.data;
        const s_time = sessionObj.time;
        const interval = 500;
        if (s_data === requestObj.data && requestObj.time - s_time < interval && s_url === requestObj.url) {
          const message = '数据正在处理，请勿重复提交';
          console.warn(`[${s_url}]: ` + message);
          return Promise.reject(new Error(message));
        } else {
          cache.session.setJSON('sessionObj', requestObj);
        }
      }
    }

    // console.log(config)
    // console.log(process.env.VUE_APP_ENCRYPT)
    // console.log(process.env.VUE_APP_ENCRYPT == "true")
    if (process.env.VUE_APP_ENCRYPT == "true") {
      // console.log(config.method)
      // console.log(isEncrypt)
      if (isEncrypt && (config.method === 'post' || config.method === 'put')) {
        // console.log(22)
        const aesKey = generateAesKey();
        config.headers[encryptHeader] = encrypt(encryptBase64(aesKey));
        config.data = typeof config.data === 'object' ? encryptWithAes(JSON.stringify(config.data), aesKey) : encryptWithAes(config.data, aesKey);
      }
    }

    if (config.data instanceof FormData) {
      delete config.headers['Content-Type'];
    }

    return config;
  },
  error => {
    return Promise.reject(error);
  }
);

// 响应拦截器
service.interceptors.response.use(
  res => {
    if (process.env.VUE_APP_ENCRYPT === 'true') {
      const keyStr = res.headers[encryptHeader];
      if (keyStr) {
        const data = res.data;
        const base64Str = decrypt(keyStr);
        const aesKey = decryptBase64(base64Str.toString());
        const decryptData = decryptWithAes(data, aesKey);
        res.data = JSON.parse(decryptData);
      }
    }

    const code = res.data.code || 200;
    const msg = errorCode[code] || res.data.msg || errorCode['default'];

    if (res.request.responseType === 'blob' || res.request.responseType === 'arraybuffer') {
      return res.data;
    }
    // console.log(code)
    if (code === 401) {
      if (!isRelogin.show) {
        isRelogin.show = true;
        MessageBox.confirm('登录状态已过期，您可以继续留在该页面，或者重新登录', '系统提示', {
          confirmButtonText: '重新登录',
          cancelButtonText: '取消',
          type: 'warning'
        }).then(() => {
          isRelogin.show = false;
          store.dispatch('LogOut').then(() => {
            location.href = '/index';
          })
        }).catch(() => {
          isRelogin.show = false;
        });
      }
      return Promise.reject('无效的会话，或者会话已过期，请重新登录。');
    } else if (code === 500) {
      Message({ message: msg, type: 'error' })
      return Promise.reject(new Error(msg))
    } else if (code === 601) {
      Message({ message: msg, type: 'warning' })
      return Promise.reject('error')
    } else if (code !== 200) {
      Notification.error({ title: msg })
      return Promise.reject('error')
    } else {
      return res.data
    }
  },
  error => {
    let { message } = error;
    if (message == 'Network Error') {
      message = '后端接口连接异常';
    } else if (message.includes('timeout')) {
      message = '系统接口请求超时';
    } else if (message.includes('Request failed with status code')) {
      message = '系统接口' + message.substr(message.length - 3) + '异常';
    }
    Message({ message: message, type: 'error', duration: 5 * 1000 });
    return Promise.reject(error);
  }
);

// 通用下载方法
// 通用下载方法
export function download(url, params, filename, config) {
  downloadLoadingInstance = Loading.service({ text: "正在下载数据，请稍候", spinner: "el-icon-loading", background: "rgba(0, 0, 0, 0.7)", })
  return service.post(url, params, {
    transformRequest: [(params) => { return tansParams(params) }],
    headers: { 'Content-Type': 'application/x-www-form-urlencoded' },
    responseType: 'blob',
    ...config
  }).then(async (data) => {
    const isBlob = blobValidate(data);
    if (isBlob) {
      const blob = new Blob([data])
      saveAs(blob, filename)
    } else {
      const resText = await data.text();
      const rspObj = JSON.parse(resText);
      const errMsg = errorCode[rspObj.code] || rspObj.msg || errorCode['default']
      Message.error(errMsg);
    }
    downloadLoadingInstance.close();
  }).catch((r) => {
    console.error(r)
    Message.error('下载文件出现错误，请联系管理员！')
    downloadLoadingInstance.close();
  })
}

// Vue.prototype.$http = service; // 将axios实例挂载到Vue原型上，全局使用
export default service; // 导出axios实例
